In Table REF  we present a list of confirmed FGs in the literature. The goal is to offer to the reader a sample as pure as possible for future follow ups. The list is probably not complete, but we did our best to select FGs applying a rigorous criterium on the \(\Delta m_{12}\)  parameter. In particular, we consider as fossils those systems with \(\Delta m_{12} \ge 2.0\)  within half the (projected) virial radius. Moreover, we exclude FGs for which membership was done using a fixed cut in \(\Delta z\) , except when no ambiguous galaxy was found within half the (projected) virial radius. The magnitude gap between the first and fourth brightest galaxies (\(\Delta m_{14}\) ) is also given, when available, but it was not used for the selection, since it was computed only in the most recent studies.
The absolute \(r-\) band magnitude of the BCG is included, when available, to simplify the application of the [1]} criterium. Moreover, we also list the mass of the system, when available. However, we note that the mass is computed in a very inhomogeneous way (different methods and radii), our goal is to offer an at-a-glance reference to the reader.
Finally, the redshift is given for all FGs listed in the table.
